US3189759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power control circuit
Assignee: ZF International UK Ltd
•
Filing: 1962-09-10
•
Granted: 1965-06-15
•
Expires: 1982-09-10
Abstract
No abstract record available.
Inventors
- 👤 Laishley Frederick Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:59
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/08; H02M1/06; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/73
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB442747A
Cited
US2352240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |